When Firefly fans pack Comic-Con’s Ballroom 20 to see the crew of the Serenity reunited on Friday, they’ll watch a teaser video to get warmed up. This video, below. It’s all part of Science Channel’s Firefly reunion master plan, which include tomorrow’s cast-and-producers panel and an upcoming TV special (details here). Nope, there’s no new footage in this “sizzle reel,” but what’s here will remind you what made this short-lived series so great (or, for the uninitiated, give you a sense of what the fuss is all about). So without further ado…